卢安夏铜矿露天开采下采空区顶板安全厚度研究
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摘要
地下采空区给露天生产带来了极大的危害,采空区顶板安全厚度的确定是露天生产的重要安全保障。为了研究卢安夏铜矿露天开采下采空区顶板安全厚度,通过对矿山原有采矿技术条件和地质资料的分析及现场实地测量和调查并结合钻孔探测等手段,确定了露天矿下采空区的分布情况。以此分析地下采空区与露天境界空间关系并对露天边坡危险区进行区划,利用理论计算和数值模拟手段对最危险区域的采空区顶板安全厚度进行研究。结果表明:在最危险区域范围内,对不同采空区范围,不同位置的采空区进行模拟结果分析,露天开采的采空区隔离层安全厚度为16m(2个台阶高度),采空区对露天开采的影响较小。
The underground goaf has brought great harm to the outdoor production,and the roof safety thickness is an important safety guarantee for outdoor production.To study the Luanshya copper strip mining goaf under safe thickness of roof in Luanshya original mining technical conditions and analysis of geological data and in-situ measurement and investigation,and combined with borehole detecting means,such as to determine the distribution of the open-pit mine goaf under.To analyze the underground mined-out area with open state space relations and on the slope of danger division,means of theoretical calculation and numerical simulation of the most dangerous area of goaf roof safety thickness are studied.Results show that within the scope of the most dangerous areas,with different range and different position of mined-out area to analyze the simulation results,the strip mining goaf safety isolation layer thickness is 16 m height(two steps),mined-out area have less effect on the strip mining.
The underground goaf has brought great harm to the outdoor production,and the roof safety thickness is an important safety guarantee for outdoor production.To study the Luanshya copper strip mining goaf under safe thickness of roof in Luanshya original mining technical conditions and analysis of geological data and in-situ measurement and investigation,and combined with borehole detecting means,such as to determine the distribution of the open-pit mine goaf under.To analyze the underground mined-out area with open state space relations and on the slope of danger division,means of theoretical calculation and numerical simulation of the most dangerous area of goaf roof safety thickness are studied.Results show that within the scope of the most dangerous areas,with different range and different position of mined-out area to analyze the simulation results,the strip mining goaf safety isolation layer thickness is 16 m height(two steps),mined-out area have less effect on the strip mining.
引文
[1]张敏思,朱万成,侯召松,等.空区顶板安全厚度和临界跨度确定的数值模拟[J].采矿与安全工程学报,2012,29(4):543-548.
[2]周文勇.地下采空区对露天矿边坡稳定性的影响分析[J].化工矿物与加工,2010,39(10):28-30.
[3]龚声武,万文.地下老采空区对边坡稳定性影响的FLAC分析[J].矿冶工程,2008(2):20-23.
[4]秦予辉,朱旭波,李地元.基于K.B.鲁佩涅依特理论的露天坑下采空区算顶板安全厚度计算[J].矿业研究与开发,2010,30(4):66-69.
[5]李夕兵,李地元,赵国彦,等.金属矿地下采空区探测、处理与安全评判[J].采矿与安全工程学报,2006(1):24-29.
[6]王玉涛.浅埋煤层开采采空区覆岩稳定性分析与评价[D].西安:西安科技大学,2013.
[7]FREIDIN A M,NEVEROV S A,NEVEROV A A,et al.Mine stability with application of sublevel caving schemes[J].Journal of Mining Science,2008,44(1):82-91.
[8]VYAZMENSKY A,STEAD D,ELMO D,et al.Numerical Analysis of Block Caving-Induced Instability in Large Open Pit Slopes:A Finite Element/Discrete Element Approach[J].Rock Mechanics&Rock Engineering,2010,43(1):21-39.
[9]SINGH G S P,SINGH U K,MURTHY V M S R.Applications of Numerical Modelling for Strata Control in Mines[J].Geotechnical&Geological Engineering,2010,28(4):513-524.
[10]赵兴东.谦比希矿深部开采隔离矿柱稳定性分析[J].岩石力学与工程学报,2010,29(S1):2616-2622.
[11]于世波,解联库,王贺.复杂条件下大规模开采采场结构参数优化研究[J].有色金属工程,2015,5(S1):13-16.
[12]田泽军,周会志.对石人沟铁矿采空区处理方法的探讨[J].金属矿山,2008(12):157-159.
[13]КУЧЕРВМ,杨培章.克里沃罗格铁矿区矿井采空区处理[J].国外金属矿采矿,1983(8):58-61.
[2]周文勇.地下采空区对露天矿边坡稳定性的影响分析[J].化工矿物与加工,2010,39(10):28-30.
[3]龚声武,万文.地下老采空区对边坡稳定性影响的FLAC分析[J].矿冶工程,2008(2):20-23.
[4]秦予辉,朱旭波,李地元.基于K.B.鲁佩涅依特理论的露天坑下采空区算顶板安全厚度计算[J].矿业研究与开发,2010,30(4):66-69.
[5]李夕兵,李地元,赵国彦,等.金属矿地下采空区探测、处理与安全评判[J].采矿与安全工程学报,2006(1):24-29.
[6]王玉涛.浅埋煤层开采采空区覆岩稳定性分析与评价[D].西安:西安科技大学,2013.
[7]FREIDIN A M,NEVEROV S A,NEVEROV A A,et al.Mine stability with application of sublevel caving schemes[J].Journal of Mining Science,2008,44(1):82-91.
[8]VYAZMENSKY A,STEAD D,ELMO D,et al.Numerical Analysis of Block Caving-Induced Instability in Large Open Pit Slopes:A Finite Element/Discrete Element Approach[J].Rock Mechanics&Rock Engineering,2010,43(1):21-39.
[9]SINGH G S P,SINGH U K,MURTHY V M S R.Applications of Numerical Modelling for Strata Control in Mines[J].Geotechnical&Geological Engineering,2010,28(4):513-524.
[10]赵兴东.谦比希矿深部开采隔离矿柱稳定性分析[J].岩石力学与工程学报,2010,29(S1):2616-2622.
[11]于世波,解联库,王贺.复杂条件下大规模开采采场结构参数优化研究[J].有色金属工程,2015,5(S1):13-16.
[12]田泽军,周会志.对石人沟铁矿采空区处理方法的探讨[J].金属矿山,2008(12):157-159.
[13]КУЧЕРВМ,杨培章.克里沃罗格铁矿区矿井采空区处理[J].国外金属矿采矿,1983(8):58-61.